I've participated in a number of Hackthons over the years. Almost always using technologies from the Microsoft stack including ASP.NET MVC, Xamarin, UWP and IOT Core.
Me and my team developer an Patient Augmented Reality Information System (P.A.R.I.S)
I developed a Xamarin Application for iPhone that uses iOS ARKit to play a simple version of Supermarket Sweep in an augmented reality 3d space.
I developed a Xamarin Application for iPhone that uses iOS ARKit to place webpage thumbnails in an augmented reality 3d space.
I developed a website that allows users to create and manage virtual bookshelves including lookups to the Amazon eCommerce API.
I developed a prototype for an iPhone app (Xamarin) to show progress of people on their way home on a map.
Developed a very basic first person shooter in Unity.
I developed a prototype for a voice controlled browser using UWP/C# and demonstrated it running on Windows Phone, IOT Core, tablet and laptop.
This year I developed a tongue in cheek website for putting celebrities in your very own prison.
With the theme of this Hackathon being 'Open Data', I developed a version of SlideShare for Charts.
This year I attended with a team from Kitbag and we developed a website that showed what each team/person was currently working on. Used Signal-R.
I developed an online tool for validating and formatting Xml strings.
This year I wanted to develop something that would analyse website/page structures and report on issues, and make recommendations.
Being a Lego fan and purchasing a Surface RT device, I wanted to develop an app for it. The free app went on to have over 3000 downloads.
I forget the year and lost the blog post but remembering building a responsive (mobile first) web app where people could report middle lane drivers to the website and see previous reports on the map.
I forget the year and lost the blog post however I built a text recognition app for Windows Phone that called the Majestic API to get url quality scores and provide a preview of that url.